Apple made a big change to Apple Pay that could kill millennials' favorite payment app

Craig Federighi, Apple's senior vice president of software engineering, unveils new features in Apple Pay at WWDC 2017. Justin Sullivan/Getty You'll soon be able send and receive money from your friends within Apple Pay.

The new feature was announced at WWDC, Apple's annual developer conference. Much like money transfer app Venmo, Apple Pay can now support peer-to-peer payments.

The feature will be integrated directly into iMessage, so users can send money directly within a conversation with a friend.

The feature will use Touch ID to make sure the transfers are secure.

Once transferred, the money will go into an Apple Pay cash card. You'll then be able to send that card to friends or family, or transfer it directly to your bank.

Apple didn't immediately say whether it would charge either the sender or the recipient for the service.

The feature will be available as part of iOS 11 and WatchOS 4, which will arrive later this year.